Lifting truck



July 3a, 1923. 1,463,538

' J. G. TANGAUY LIFTING TRUCK Ilm BEPM ELTANGAUY' July 31, 1923. 1,463,538

J. G. TANG1AUYl LIFTING TRUCK F11ed May 24, 1920 2 Sheets-sheet 2 I I lNvEl-Tmq dup s1 EP H ELTAN GAUY' To all whom t may concern.'

Patented July 3l, 1923.

UNITED staresA messie erarasics.

JOSEPH' GgTnNG-AUY, or HOLYGKE, .ivresseorrUsETTs.

LIFTING TRUCK. i

Application filed May 24,

'Be it-known vthat Josnrn G. TANGAUY, a citizen of Canada, residing at Holyoke., in the county of Hampden and State ofMassa--Y chusetts, has invented certain new and useful Improvements in Lifting Trucks, of which the following is a specification.

This invention relates to improvements in lifting or elevating trucks and its leading 4obj ect is to provide a truck of this type with a vertically movable or elevating platform and means for moving the same vertically without shifting the elevating platform longitudinally or otherwise upon the truck body or base` platform. p

Another object of the invention is to pro- 4vide a simple lockingdevicefor holding the elevating platform in its raised position.

Figure 4 is a detail view showing the connection vbetween the lifting cranks and the operating` levers and also the latch releasing device.

Figure 5 is a detail view showing one of the levers and its roller for operating the elevating platform.

Figure 6 is a detail view showing the rod connecting the forward and rear levers for elevating the movable platform.

Referring to the accompanying Ydrawings 5 designates the body or base platform of f the truck which is supported at its rear end upon an axle 6 equipped with ground wheels y 7. The forward end of the body 5 has a block or plate 8 secured thereto which carries a king bolt 9 which connects a depending bracket or framelO pivotally to theforward end of the extension or plate 8. The frame or bracket 10 carries a front axle v11 on which the ground wheel 12 is journaled and the arms of the fork 13 arel mounted upon the ends of said axle 12 and connected with the draft pole or lever 14 which eX-` 1920. Serial No. 333,880.

tends lfrom said yoke forwardly to permit of j the pulling vof the truck and 'theoperation of tlie'lifting mechanism.

On the axle 6 a pair of crank arms 15are mounted and'keyed against relative movement thereon and each of said crankarms carries a rollery 16 mounted thereon to freely rotate in either direction. Onthe forwardends of the sides of the body 5 a shaft 17 is journaled and on this shaft the crank arms 18 are secured, each. of said crank arms `car' rying aroller 19 similar to the 'roller 16 and one of said arms V18 being located near each end of the shaft. The elevating platform 2O is provided with track faces 21 on either side thereof which are engaged by the roll# ers 16 and 19 as indicated in Figures land 3 and said platform l2O carries at its rear end vertical guide posts 22 ywhich are` slidably associated with sockets-23 formed in v the body 5 ard4 also carries at its v.forward end guide posts 24 which are slidably asso*- ciated withsockets 25 formed in the forward portion of the body 5. y

The'anle 6 carries a bifurcated crank 2 and the shaft 17 carries a similar bifurcated crank 27. The rear end of the operating rod 28 is pivotally connected with the bifurcated crank 26 and rod 28 is also pivotally connected near its forward end with they bifurcated crank 27. rlhe forward end of the operating rod 28 is bifurcated and connected with the lever 29 which is pivoted Vat 30 to the extension or block' 8. The lever 29 carries on its head a collar 31 providing a bearing 32 to which the link 33 isipivotally connected, the forward end of said link being pivotally connected at 34 with the collar or sleeve 35 slidably mounted upon the draft pole 14. The ,pole- 14 carries an abutment 36 for limiting the rearward slidingmovement ofthe collar or sleeve 35 andV y to receive the thrust transmitted to the draft pole Awhen the'lifting mechanism is operated.

The vertical lever 29 carries a latch 37 which isi-,adapted to engage a notch 38 formed in the rod 28, the latch lever 37 being adapted to drop by gravity or spring pressure into said notch 38. The latch 37 is disengaged from said notch 38 by means of a trip lever 40 pivoted at 41 to the block 42 lprovided yon the block or extension 8 of the body 5 and whichV triplever is formed with a depressible foot plate 43.

When it is desired to elevate the platform,

2() from the position shown in Figure 1 to the position shown in Fig. 3 the draft pole 14 is swung downwardly upon the front axle 11, thus swinging the lever 29 from the position shownin Fig. 1 to the position shown in Fig. 3 and shifting the crank arms 26 and 27 and 15 and 18 from rearwardly inclined positions in parallelism with each other to parallel vertical position. As `the levers 15 and 18 are shifted forwardly the rollers 16 and 19 will roll against thel underside of the platform 2O and the said platform will be elevated vertically without longitudinal or horizontal displacement, which will be prevented by the guide posts 22 and 24C and their connection with the sockets of the body 5.' ,Vhen the lever 29 is shifted from the position in Fig. l to the position "shown in Fig. 3 the latch arm or lever 37 will drop into the notch 38 thus holding the elevated platform against accidental movement in the reverse direction.

" It will be seen that my invention provides an elevating truck which will permit of a load being discharged directly over the Aposition in which the trncl has been placed,

without danger of shifting the load during the operation of lowering the platform 20, which is affected by disengaging` the latch arm or lever 37 by means ofthe trip lever lOand raising the draft4 bar or lever 14.

Having described my invention, l claim: 1. A lifting truck comprising a wheeled body, a crankarm pivoted to the rear end ofsaid body, a crank arm pivoted to the forward end of said body, an operating rod pivot'ally connected with said crank arms and holding said crank arms in parallel relation to each other, a draft pole pivoted on said body, a link having sliding connection with said draft pole and operating connec pivotally connected with said front axleV a platform movable on said body, means for .elevating Ysaid platform carried by rsaid body and including an operating rod, an upright lever pivoted Vto said body and piv- Votally connected with said rod, a linl;

pivotally connected with the upright lever and havingsliding connection with the first lever, said first 'lever having an Vabutment to receive the thrust of said sliding connection and to limit the rearward movement thereof. A

8. An elevating truck comprising ak body, rear wheels foi' ,supportingv said body, a front support for said body and including a' wheel, a platform movable onisaid body, y

guide posts carried by the frontand rear end ofsaid platform andy having sliding engagement withV said body, crank arms pivoted on said body and provided with means for engaging said platform, a rod pivot/ally connecting said crank arms in parallel re-y lation to each other, a lever pivoted at its lower end to 'the forward end of said body and pivotally connected with said rod, Va latch arm pivoted to said last lever and adapted to have locking engagement with said rod, and' means for disengaginf;` said -lever from said rod.

Signed by me at Springfield, Mass. y JosnPii e. raiveaiir. 

